2b2r: Difference between revisions

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[[Image:2b2r.gif|left|200px]]
{{Seed}}
[[Image:2b2r.png|left|200px]]


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{{STRUCTURE_2b2r|  PDB=2b2r  |  SCENE=  }}  
{{STRUCTURE_2b2r|  PDB=2b2r  |  SCENE=  }}  


'''Crystal structure of an oxoferryl species of catalase-peroxidase KATG at pH5.6'''
===Crystal structure of an oxoferryl species of catalase-peroxidase KATG at pH5.6===




==Overview==
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The catalase reaction of catalase-peroxidases involves catalase-specific features built into a peroxidase core. An arginine, 20 A from the active-site heme, acts as a molecular switch moving between two conformations, one that activates heme oxidation and one that activates oxoferryl heme reduction by H(2)O(2), facilitating the catalatic pathway in a peroxidase. The influence of the arginine is imparted to the heme through its association with or dissociation from a tyrosinate that modulates reactivity through a Met-Tyr-Trp crosslinked adduct and a pi electron interaction of the heme with the adduct Trp.
The line below this paragraph, {{ABSTRACT_PUBMED_16211084}}, adds the Publication Abstract to the page
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{{ABSTRACT_PUBMED_16211084}}


==About this Structure==
==About this Structure==
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[[Category: Katg]]
[[Category: Katg]]
[[Category: Oxoferryl species]]
[[Category: Oxoferryl species]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 19:46:35 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 15:53:34 2008''
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